Unit 1 Science and Scientists Discover Useful Structures 表语从句课件-2023-2024学年高中英语人教版（2019）选择性必修第二册

高一英语 名词性从句之表语从句 在句子中起名词作用的句子叫名词性从句 (Noun Clauses)。名词性从句的功能相当于名词, 它在复合句中能担任主语、宾语、表语、同位语等。因此根据它在句中不同的语法功能,名词从句又可分别称为主语从句、宾语从句、表语从句和同位语从句。 名词性从句概念 His story is interesting. What he said is interesting. I heard his story. I heard what he said. His story is interesting. What he said is interesting. I heard his story. I heard what he said. 主语 主语从句 宾语 宾语从句 This is his story. This is what he said. The idea of going there is good. The idea that we go there is good. This is his story. This is what he said. The idea of going there is good. The idea that we go there is good. 表语 表语从句 同位语 同位语从句 1.When we will start is not clear. 2.I expect that your team will win. 3. My idea is that we do it right now. 4.I had no idea why she was angry. 1.When we will start is not clear. 2.I expect that your team will win. 3. My idea is that we do it right now. 4.I had no idea why she was angry. 主语从句 宾语从句 表语从句 同位语从句 Practice time 名词性从句之表语从句 表语从句位于连系动词后,在句中作表语。 其基本结构为:主语+系动词+从句。 “系动词”,起着连接和联系的作用,将主语和后面的部分(表语/主语补语)连系在一起。 连系动词也可以直接单独作谓语。 表语从句 例如: The boss is in his office. 老板在他的办公室里面。(主系表) Her voice sounds wonderful. 她的声音听起来很美妙。(主系表) 在这两句话中,“is” 和 “sound” 都是系动词,分别表示“是”和“听起来”的意思。 前一句表明了老板现在的位置状态, 后一句表明了她的声音的质量状态。 引导表语从句的连接词有:that ,whether, as if; 连接代词有who, whose, what, which, 连接副词有 when, where, how, why等。 另外as, because,也可引导表语从句。 . that引导的表语从句(that无词义,一般不省略) The fact is that we should depend on ourselves. 事实就是我们必须依靠自己。 The reason for his absence is that he hasn’t been informed. 他缺席的原因是他没接到通知。 . whether引导的表语从句 What l was uncertain about was whether they could do the work well. whether仍保留“是否”的意义,不能换成if 我不能确定的是他们是否能把工作做好。 The question is whether we can rely on him. 问题是我们能否依赖他。 . wh-类连接词引导的表语从句 wh-类连接词包括: 连接代词(who, whom, whose, what, which, whoever, whatever, whichever等) 连接副词(where, when, how, why, wherever whenever等)。 此类词大多数表示疑问,偶尔表示陈述。 This is what I am interested in. 这就是我所感兴趣的。 . as if,as though引导的表语从句 此类表语从句常跟在特定动词后,如seem, appear, look, taste, sound, feel等,可用陈述语气,也可用虚拟语气(注:虚拟语气暂不涉及)。 It sounds as tho